Elevator safety device.



BRSONY.

ELEVATOR SAFETY DEVICE,

APPLICATION NLED Ayla E. BRSONY.

ELEVATOR SAYBTY DEVICE,

APPLICATION FILED UR.3.1914.

31112011 fc/a 4 SHEETS-SHEET 2.

Patented Mar. 23, 1915.

{IHQ C." f f) i V fungi@ E. BRSQNY, ELEVATOR SAPETY DEVICE. APPLICATION FILED APR. 2.1914A l gl, Patented Mar. 23, 1915,

l SHBETSSHEET j EL,

E. BA'RSONY. `ELEVATOR SAFETY DEVICE. APPLICATION FLED PR 3, w14,

. Eatented Mar. 23, i915.

4 SHEETS-SHEET 4.

Homwtj EMERY BRSONY, 0F 4(gtSTIiIEIION-ON-I-IUDSON', NEW YORK.

.ELEVATOR SAFETYV DEVICE.

Specification of Letters Patent.

Patr-med Mar. 23, 1915!.

Application filed April 3, 1914. Serial No.'829,218.

T0 au 'to/wm zt may concern:

Be it known that I, EMERY BRsoNY, a subject of the King of Hungary, residing at Castleton-on-Hudson, inthe county of `Rensselaer and State of New York, have invented certain new and useful Improvements in Elevator Safety Devices, of which the following is a specification.

This invention relates to certain new and u seful improv-ements in elevator safety devices.

Accidents having frequently occurred. by reason of persons falling down an open elevator shaft, it'is now designed to prevent all of such accidents by providing safety devices for elevators, whereby it is impossible to open the door of the elevator shaft at all times excepting when an elevator car is stationed at such door, while the power means of the elevator is automatically disconnected at all times when the shaft door is positioned open, which prevents any movement of the car at such times, and thereby doubly insuring against the exigency of an open unobstructed elevator shaft.

An object of the invention is to providethe said safety devices adaptable for the double door'type of elevators and regardless of the form of motive power employed.

A.l further object is to provide a separate lock stop for each door of a ldouble door elevator, .automatically released at each floor landing with the service doors in operative alinement, While the motive power for the;

-sists in the novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the appended claims.

In-thedrawings forming a part of this application and in which like designating characters refer "to corresponding `parts throughout the several views :-Figure l is a vertical longitudinal sectional view taken through an elevator shaft with the elevator car shown therein partially broken away and positioned at a l'loorri'anding and illus@ trating the installation of the invention upon the double door type of elevator, Fig. 2 is a similar view' of the empty shaft taken upon a plane perpendicular to the line of section of Fig. l and looking in the direction of the landing doors. Fig. 3 is an interior corner perspective view of a portion ,of the-elevator shaft at a floor landing,

door. Fig. is a horizontal transverse sec-- tional view upon substantially the same plane as Fig. 4, and showing the separate spring stops for the shaft and the car doors' in their depressed inoperative positions as assumed when the car 1s positioned at a iioor landing. Fig. 6 is a vertical sectional detailed view of the spring stop for the car door, shown'in its operative locking position. Fig. 7 is a vertical sectional view .K taken upon line VIIwVII of Fig 5. Fig. 8

is a bottom plan view of a portion of the car showing the motive-power circuit yswitch open as lpositioned when both the shaft and carl doors are open, the position of the shifting track-section being indicated.K Fig. 9 is a similar view withV the switch in its closed position as eiected by closing both of the doors, Fig. 10 is a perspective view of the door portion of the car with the door in its open position, and parts being brokenaway. Fig. 11 is a perspective view of the motivepower. circuitswiltch detached from-the bottom o f the car. Fig. 12 is a horizontal sectional view substantially upon the planefoyf the upper face 01"v the. shifting track sectionv of Fig. 3. Fig. 13 is `a detail vertical sectional view upon line XVe-XVJ of Fig. 14. Fig. 14 is a view similar to Fig. 12 butwith Ithe parts' shown as positioned with the shaft door closed. Fig. 15- is a perspective View 1' of the shifting track section detached.' Fig. 16 is a central horizontal sectional view taken through the shifting track section and the adjacent elements as shown in Fig. 12. Fig. 17 is a diagrammatic viewi of the eleci ,A i. ,Y incense.

the entire device operative details ojl the.`

' double door system olf safety devices will now be considered. I

Referring more in detail to the di" the elevator shaft 30 is illustrated i oppositelyarranged longitudinal g1 s for theA sliding reception of blocks tcar ried by the elevator car-83, which car in the form illustrated in Figs. fl aen-'dilo ot th drawings, is provided with .a sliding door 3e hereinafter termed the inner or car door. rllhe elevator shaft is providediat each floor landing as 35 with a sliding door 36 herein referred to as the shaft doors. y

l/Vith the car andshat each provided with a separate sliding door illustrated as in Figs. l, Q, 5, and 7 of the drawings, it is desired to automatically disconnect the motive power of the car at all times when the car is positioned at a floor landing when either one of the doors is in its open position and it is also desirable that' both of the doors remain'loclted at all times excepting when the car is positioned vat a landing. rlhe Ecar door 3% is shit'table to and from its closed position, being slidably-mounted in the groove 53 at the 'front of the cariand when closed, the' spring stop all is positioned rearwardly thereotl and has a shifting outward and inward movement vedected at each floor landing as hereinabove described. it will 'thus be seen that the stop 44 will be; removed from the rearward path of travel of the car door whenever thelshoe i6 is depressed upon reaching a loor landing, and at which time the car lamp circuit is completed :tor lighting the lamp, whilethe stop will rest rearwardly of the car door at all of the usual positions of the car when traveling between different lfloors, so that the cardoor remains locked by the spring stop except when such stop is automatically released at each of the floor landings and only at which times the car door may be lreely opened. A similar spring stop inthe form-Iota pin 54 is provided for th'eshaft door 36 and/adapted to engage the rear extension'j55 of said door, which extension and doorn are slidalolymounted in the top groeve 5G of a U-beam 57. This stop 54 when unlatched is adapted to be seated within the recess 58 el the shaft wall 59 and is mounted upon a longitudinally shiftable pin 6G normally projected outwardly by means of an encircling spring 61 bearing against thebeam 5'? within the in their closed positions outer .recess 62 thereof and against-the head or shoe G3 oli the pin G0, 'and whereby as illustrated in llig. 13, the normal position of the stop is rearwardly or" the extension 55 and thus locking the door closed.

vstationary engaging block 6l is rigidly' secured on the outside of the car and adapted to contact the shoe (S3 of each floor land-v ing as such landing is reached in the course or' travel of the car up and down withinthe sl'ia'l't and whereby/,upon the arrival of the car at any Hoor, the shoe 63 of that landing will be depressed by its engagement with the car-carried blocli (S-land the shaft door 3G of that landing will be automatically unlocked and allowed to be opened during such engagement between said shoe and block" while upon the interruption of such engagement as caused by a movement ofthe car away lroin that floor, the stop 54 automatically re-locls the said shaft door 36.

ln the present embodiment of the invention, the same has been illustrated in connection with lthe elevator system which employs electricity as its motive power for running the elevator car, although it is to be under stood that the invention is equally adaptable, no matter what form ot' motive power is employed, such for instance as hydraulic or the counter-weight system and any of the same may be readily disconnected operatively and in an automatic manner by applying the present devices to the elevator system.`

included in the cable 52 beneath the bottom of theelevator are provided with amanually-operated controller 6l' and an automatic mainswitch ,68 in circuit therewith. The

line wire,` 65 is connected to the Abinding post 69 ofthe controller which controller is ifurnished with a contact arm 70 pivotedas at 71 while said pivot point isconnectcd by the wire 72 with the post `73 olithe switchA 68. Contactpoints 7l of the controller are in constant circuit with the post 69 and consequently with the line wire 65. so that an electrical connection is made withthe wire 72 wheneverthe arm 7() eontact'seither one of thevp'oints Til. The post 73 of thelswitch 68 is electrically connected with the. piyi'oted switch blade 75 adapted to make and ljrealr Theelectric line wires 65 and G6 desirably contact with the slotted contact 7 6,.,which latter contact is in electrical circuitwith the wire G6. 1

The switch G8 is secured to the car bottom 38 and the switch blade 75 has its outer end secured by an insulate-d link 77 to a connec-` tor 78, the opposite end of which is pivoted toan end of a pivoted lever 79, and also to the end' of a leg S0 supplied with an outwardly projecting foot 8l. The lever 79 being pivoted at 82 to the car bottom has its free end-connectel'l to a spring 88 secured as at 84 to said bottom and whereby the switch blade 75 is normally held out of contact with 'the contact point 76 and the switch maintained lopen with the motive power circuit broken.

rPhe beam 57 is provided with a cut-away portion 85 at a poi-nt beneath the forward portion of the shaft door opening 86 and has positioned therein a shifting block 87 provided with a vertically-arranged U-shaped track section 88l having a curved cam flange 89 projecting from the shiftable block and normally projecting across the groove 56 and within the path of the door 36 upon its sliding movement and whereby the closing of the door engages the same against the flange 89 and forcibly moves the shiftable block with its track-section inwardly of the elevator shaft and in which Yprojected posi tion, it is retained by the door while the same remains closed, said door having a spring latch 90 for engaging a keeper 91 and only releasable without a key from the interior of the shaft.

lV hen the car is positioned at a ioor landing, the foot 81 is in alinement with the track section 88 andlis slidably movable therethrough but normally held engaging the bottom thereof by means of said spring 83. By this arrangement, it will be evident that with. the door 36 in its open position and the foot 81 positioned'within the track section 88, a closing of the door 36 will move laterally inwardly the foot 81 as well as the `switch blade to the position illustrated in Fig. 8 but still out of engagement with the contact 7 6 and still maintaining the broken circuit. The car door 34: is adaptedupon closing 'to engage the curved surface 92 of the block 93 mounted upon the leg 80, when such leg has been partially shifted by the track section 88 in the manner described and upon the closing of the shaft door Such engagement of' the car door 34 with such curved surface forces the leg inwardly Dand away, from the track section 88 to such a position as shown in Fig. 9 whereby the switch 68 is closed and is retained closed until the car door 34 releases the spring switch mechanism upon being again opened. It will be seen by this arrangement 1iat when both doors are open, the leg 80 and its foot are projected in their outermost positions and with the switch 68 the farthest open and in such position an attempted closing of the door 34 brings the forward edge thereof in contact with the edge 94 of the block 93 and prevents a closing of said door 34 or a shifting o f the foot 81, while as above set forth, upon first closing the'shaft door 36 and .thereby slightly shifting the foot 81 to thefp'osition shown in Fig. 8, it is possible to close the door 34, and in doing so, its en: gagement with the curved surface 92 of the block 93 completes the'closingof the switch as shown in 9. These elements are those eiiectual i-n preventing the completion of themotive power circuit until both ofthe doors have been closed and thus prevents any movement of the car when either one of the doors remains open. f y

The shiftable block 87 is resiliently maintained seated with its [fange 89 projecting into the groove 56 by means of the spring members 97 engaging rearwardly extending pins 98 of said blo'ck.

From this detailed description it is believed that the complete opera-tion ofj the device will be apparent.

In this double door system upon stopping the car at the desired lioor, the spring stop means for whatever closures are employed are automatically released, allowing the opening thereof which is possible only when the car reaches a oor landing.

The complete Lautomatic operation of the electric motive power switch 68 has already been fully described in connection with the double door type of elevator, and 'it is only necessary to further state that upon the'arrival of the car at the desired ioor landing, the doors are automatically released by the spring stop means and arermanually slid to their open positions by the car operator and which is only possible from the interior of the car and shaft. The opening of the doors automatically opens the motive power switch, preventing any possible further travel of the car until such switch is closed, and which operati on is automatically effected by closing both of fhe doors.

While the formsV of the invention herein shown and described are what are believed to be preferable embodiments thereof, it isV nevertheless to be understood that various slidable car door, fa motive-power Switch upon the car, automatic opening means for said switch operable upon an opening of the car door, said means obstructin ly positionable within the closing path o movevmovable therein, a slidable shaft door, a'

ment of the car door when the shaft door is open.

3. A device of the class4 described, conprising an elevator shaft, a car vertically movable therein, a slidable shaft door, a slidable car door, a motive-power switch said switch operable upon an opening ofthe car door, said means obstructingly positionupon'the car, automatic opening means for ver;

vprising an elevator shaft, a car vertically movable, therein, a slidable shaft door, a slidablecar door, a motive-power switch upon the car, automatic opening means for said switch operable upon an opening of the cardoor, said means obstructingly positionable Within the closing path of movement of: the car door when the shaft door is open,rneans for shifting said switch and automatic opening means upon a closing of the shaft door, and means for closing said switchfupon the subsequent closing of the car door.

5. A device of the class described, comprisingaii elevator shaft, a car vertically movable therein, a slidable shaft door, Aa slidable car'- door, a motive-power switch upon the ca r, and automatic opening means for said 'switch operable upon an opening ofthe car door, said means obstructinglv positiorable within thel closing path of movementof the car door when the shaft door'is'open.

(l. Ajdevice of the class described, com- 'prsingan'elevator shaft, a car vertically movable therein, a Slidable shaft door, a

slidalole -car door, la motivepower switch 'l upon the' car,` automat-ic opening means for said switch operablev upon an opening of the car door, said means obstruotingly positionable lWithin the closing path or' moveM ment ofthe car door when the shaft is open, -means -for Shifting vsaid'svvitch and auto "matic opening means upn a'closing of the insenssha't door, means iter switch upon tile subsequent clesmg ci; tne

said car, a normally open power switch upon saidv car, and closing means for said switch operable simultaneously With the closing of both doors.

8. A device oi' the class described, com prising an elevator car, a motive-power switch secured to said car and having a pivoted switch lever, an arm insulatively linked to said lever,l a foot member pivoted to said arm and adapted for extending cut- Wardly of the side of the car, a pivoted red linked to said arm and foot member, and resilient means secured te the free end of said rod and adapted Jer normally opening said switch. v'

9. A device of the class described, comprising an 'elevated car, a motive-panier switch secured te said car and having a piveted switch lever, an arm insulatively linked to said lever, a feet member pivcted te said arm and adapted :for extending outwardly of the side of the car, a pivoted rod linked to said arm and feet member, resilient means secured to the free of said red and adapted for normally opening said switch, a slidahle doc-r :for said car, and a cam block projecting rom'said inet member and eretanding; in the path ci? movement et said door and adapted 'ller closing said switch when the door is :in testimony ,vhereoif l ama my signature in presence of tvfc t l, .l" BRS Vlitnesses:

J. YW. itis/Krimi Sfrnsrmn Vedi, 

